Case 570NXT - Oil Leak Detection with UV Dye

INTRODUCTION
1.Priortoaddingdye,connecttheblacklighttothe
machinesbatteryandinvestigatesuspectedareas.
2.Oncesuspectedleakareasarefound,attemptto
tracetheleakcompletelytotheorigin.
NOTE:Attheorigin,theleakshouldbethebrightest
incolor.
3.Afterconrmationofthesuspectedleak,thoroughly
cleantheareaoftheleaktoremoveanyexistingu-
ids.Rechecktheareawiththeblacklighttoassure
theareaisclean.Goodcleaningisimportantforthe
followingreasons:
•
Fluidscapturedbythreadedjointsorother
cavitieswillcontinuetoshowsignsofleakage
unlesscompletelyclean.
•
Castingsurfacescanholdresidualoil.
RCPH10TLB245ACL1
4.Usetheentirecontentsofthebottleofdyeinthe
system/systemsofthesuspectedleak.
5.Runtheunitfor5to10minutesandcyclethrough
suspectsystemfunctionstoensurethatthedyeis
availabletoallpossibleleakpoints.
NOTE:Thehydraulicoilshouldbeheatedto71°C
(160°F),engineatnormaloperatingtemperature,
andtransmissionshouldbeinthenormaloperating
rangeonthegauge.
6.Useacleanclothandwipethedipstickortheinside
surfaceofthellertubeoneachofthe3sumps.
7.Viewtracesofdyeduidontheclothundertheblack
lighttoensuregoodsamples.
8.Usethese3samplesasyourbaselinewheninspect-
ingtheunitwiththeblacklight.
NOTE:Highhourengineoilcanreducetheeffec-
tivenessofthedye.Inthiseventchangetheoil.
9.Avoidcommonerrors.
•
Fanairowblowingleakinguid.
•
Gravitypullingleakpathsdown.
•
Whenpaintatajointisnotbroken,thejointis
notleaking.
NOTE:Itisnotnecessarytochangeoilsafterthis
check.
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